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Critical 10.0Published Jul 30, 2026
CVE-2026-66803Azure Cosmos DB Remote Code Execution Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft Azure Cosmos DB. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Improper access control in Azure Cosmos DB allows an unauthorized attacker to execute code over a network.
- CVSS
- 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
- Weakness (CWE)
- CWE-284
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft Azure Cosmos DB microsoft:azure_cosmos_db (from the name) | - | CNA record |
microsoft azure_cosmos_db microsoft:azure_cosmos_db | all versions | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66803vendor-advisory, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.